org.apache.cayenne.query.ProcedureQueryMetadata Maven / Gradle / Ivy
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package org.apache.cayenne.query;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.cayenne.map.EntityResolver;
import org.apache.cayenne.map.Procedure;
class ProcedureQueryMetadata extends BaseQueryMetadata {
transient Procedure procedure;
@Override
public Procedure getProcedure() {
return procedure;
}
@Override
void copyFromInfo(QueryMetadata info) {
procedure = null;
super.copyFromInfo(info);
}
void resolve(
Object root,
Object resultRoot,
EntityResolver resolver,
ProcedureQuery query) {
if (super.resolve(resultRoot, resolver, null)) {
procedure = null;
if (root != null) {
if (root instanceof String) {
this.procedure = resolver.lookupProcedure((String) root);
}
else if (root instanceof Procedure) {
this.procedure = (Procedure) root;
}
// theoretically procedure can be in one DataMap, while the Java Class
// - in another.
if (this.procedure != null && this.dataMap == null) {
this.dataMap = procedure.getDataMap();
}
}
// generate unique cache key...
if (QueryCacheStrategy.NO_CACHE == getCacheStrategy()) {
}
else {
// create a unique key based on procedure and parameters
StringBuilder key = new StringBuilder("proc:");
if (procedure != null) {
key.append(procedure.getName());
}
Map parameters = query.getParameters();
if (!parameters.isEmpty()) {
List keys = new ArrayList(parameters.keySet());
Collections.sort(keys);
for(String parameterKey : keys) {
key.append('/').append(parameterKey).append('=').append(
parameters.get(parameterKey));
}
}
if (query.getFetchOffset() > 0 || query.getFetchLimit() > 0) {
key.append('/');
if (query.getFetchOffset() > 0) {
key.append('o').append(query.getFetchOffset());
}
if (query.getFetchLimit() > 0) {
key.append('l').append(query.getFetchLimit());
}
}
this.cacheKey = key.toString();
}
}
}
}